~~~~~River over a River.......................

                   The Incredible Magdeburg Water   Bridge in Germany The  Magdeburg Water Bridge is a navigable aqueduct in Germany that  connects the Elbe-Havel Canal to the Mittelland Canal , and  allows ships to cross over the Elbe River At 918 meters, it is  the longest navigable aqueduct in the  world.
  The  Elbe-Havel and Mittelland canals had previously met near  Magdeburg but on opposite sides of the Elbe . Ships moving  between the two had to make a 12-kilometer detour, descending  from the Mittelland Canal through the Rothensee boat lift into  the Elbe, then sailing downstream on the river, before entering  the Elbe-Havel Canal through Niegripp lock. Low water levels in  the Elbe often prevented fully laden canal barges from making  this crossing, requiring time-consuming off-loading of  cargo.